The Hilltop resident was last seen ditching Father Gabriel outside the Sanctuary after Gabriel tried to help him, and if you were wondering what happened to Gregory afterwards, you can watch the clip below.

"I can't say too much, but we'll definitely learn a little bit of a backstory from Morales and what's been going on with him over the years, and a little bit of what's led to his transformation and transition into one of Negan's men as a Savior," he said.

The Walking Dead airs Sunday on AMC in the US, with FOX and NOW TV airing the show a day later in the UK.